ASTM A319 hi grey cast iron material a ni a, non-pressure vessel components te chu temperature sang takah hman a ni. He standard hi American Society for Testing and Materials (ASTM) chuan kum 1971-a tihchhuah hmasak ber a ni a, kum 2001 khan a nemnghet leh a ni.
A hman dan tur leh a nihna ziarang .
ASTM A319 standard hi gray cast iron grade thum-ah hman theih a ni a, hei hi non-pressure vessel components, high-temperature environment-a thawk, grate bar, grate linkages, grate components, fuel furnace components, fire box components, ingot molds, glass molds, caustic pots, leh metal melting pots te tan a tha hle. Heng cast irons te hian 1400℃F (760℃) thlenga temperature nei environment-ah an thawk tha hle a, mahse hei hian gray cast iron grade pathum te hi temperature range pumpui atan a tha vek tihna a ni lo. Grade thenkhat chu stress a hniam loh chuan long-term service atan chauh a tha.
Class a chhiat dan .
Gray cast iron hi grade thum ah then a ni a:
Grade I: Thermal shock laka invenna tha tak.
Grade II: Average heat shock resistance leh medium to good tensile strength (tensile strength chu 30,000 psi emaw 207 MPa emaw aia tam a ni tlangpui).
Grade III: Grade I leh II aiin tensile strength sang zawk (tensile strength hi 40,000 psi emaw 276 MPa emaw thleng a ni thei).
Thil siam chhuah dan leh taksa mamawh .
ASTM A319 standard hian smelting process a tarlang lo a, chu chu foundry duhthlannaah dah a ni. Standard hian standard dang, ASTM A48 te pawh a huam tel a, chungte chuan gray cast iron atana specification te chipchiar takin a tarlang a, chung zingah chuan hardness, tensile strength, yield strength, impact toughness, leh mechanical property dang testing standards te pawh a tel a ni.
